KR20010057927A - Paper roll having ceramic coated layer - Google Patents

Paper roll having ceramic coated layer Download PDF

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Publication number
KR20010057927A
KR20010057927A KR1019990061346A KR19990061346A KR20010057927A KR 20010057927 A KR20010057927 A KR 20010057927A KR 1019990061346 A KR1019990061346 A KR 1019990061346A KR 19990061346 A KR19990061346 A KR 19990061346A KR 20010057927 A KR20010057927 A KR 20010057927A
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South Korea
Prior art keywords
coating layer
roll
ceramic
porosity
paper
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KR1019990061346A
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Korean (ko)
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김형준
김부일
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신현준
재단법인 포항산업과학연구원
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Priority to KR1019990061346A priority Critical patent/KR20010057927A/en
Publication of KR20010057927A publication Critical patent/KR20010057927A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances

Abstract

PURPOSE: A roll for paper making obtained by coating a Ni-based or Co-based alloy on the surface of a substrate of a roll and then coating ceramic containing TiO2 thereon is provided, which enables paper to be eliminated easily from the roll and improves abrasion resistance. CONSTITUTION: This roll comprises: a coating layer of a Ni-based or Co-based alloy on a substrate of a roll comprising low-carbon steel; and a ceramic coating layer containing Al2O3 or Cr2O4 and 2 to 40% by weight of TiO2 thereon. The coating layer of a Ni-based or Co-based alloy has a porosity of 3% or less, and ceramic coating layer containing Al2O3 or Cr2O4 has a porosity of 11% or more on its surface and 9% or less on its cross section.

Description

세라믹 코팅층을 갖는 제지용 롤{PAPER ROLL HAVING CERAMIC COATED LAYER}Paper roll with ceramic coating layer {PAPER ROLL HAVING CERAMIC COATED LAYER}

본 발명은 종이를 생산하는 제지공장에서 사용하는 롤에 관한 것으로, 특히, 내마모성 및 내부식성이 우수한 세라믹코팅층을 갖는 제지용 롤에 관한 것이다.The present invention relates to a roll used in a paper mill producing paper, and more particularly, to a paper roll having a ceramic coating layer excellent in wear resistance and corrosion resistance.

제지 생산라인에는 수많은 롤이 사용되고 있으며, 대부분의 롤들은 내마모성과 내부식성 향상을 위하여 용사코팅이나 육성용접을 적용하여 사용되고 있다. 용사코팅의 예로서는 WC-Co 소재를 고속용사 방법으로 코팅하거나, Mo 소재를 아크용사 방법을 이용하여 코팅하고 있다.Numerous rolls are used in the paper production line, and most rolls are used by spray coating or fusing welding to improve wear resistance and corrosion resistance. As an example of the thermal spray coating, the WC-Co material is coated by the high speed spraying method, or the Mo material is coated by the arc spraying method.

제지용 롤 중 제지와 직접 닿고 다시 제지를 빼내어야 하는 기능을 하는 돌로 제작된 롤이 있는데, 돌로 제작된 이유는 돌이 내마모성과 내부식성이 우수하고 특히 돌 표면에 있는 수많은 기공에 의하여 수분이 있는 종이가 용이하게 분리되기 때문이다. 그러나, 이러한 돌로 제작된 롤은 롤 전체를 돌로 제작하므로 너무 하중이 많이 나가게 된다. 따라서 최근에는 표면에 기공이 많이 함유된 세라믹 용사코팅을 적용하려고 시도되고 있다.Among the paper rolls, there is a roll made of stone that directly touches the paper and removes the paper again. The reason for the stone is that the stone has good abrasion resistance and corrosion resistance, especially paper that is moistened by numerous pores on the surface of the stone. Is easily separated. However, rolls made of such stones are made of stones so that the load is too much. Therefore, recently, there have been attempts to apply a ceramic thermal spray coating containing a lot of pores on the surface.

영국 특허(No. 8600192, 1985년 1월 9일)에서는 제지용 롤의 용사코팅으로서 금속과 세라믹의 복합재를 제안했으며, 유럽 특허(No. 90850358.4, 1990년 10월 26일)에서는 표면은 세라믹과 금속의 혼합재를 용사코팅하고 모재의 내부식성을 증대하기 위하여 혼합재를 코팅하기 전에 스테인레스 스틸의 기공도를 4%이하로 제어하여 코팅하는 방법을 제안하고 있다.The British patent (No. 8600192, January 9, 1985) proposed a composite of metal and ceramic as a thermal spray coating for paper rolls. In the European patent (No. 90850358.4, October 26, 1990), the surface In order to spray-coated metal mixtures and to increase the corrosion resistance of the base material, a method of controlling the porosity of stainless steel to 4% or less before coating the mixture is proposed.

일반적으로 세라믹 소재를 플라즈마 용사코팅하면 기본적으로 코팅층에는 5-20%정도의 기공을 형성하게 되는데 기공이 작을수록 높은 접착력을 얻을 수 있기 때문에 사용되는 분말의 입도를 작은 것을 사용하거나 용사변수를 조절하여 되도록 작은 기공 크기와 낮은 기공율을 얻는 것이 필요하다. 그러나, 제지용 롤의 경우는 종이를 잘 이탈시키기 위하여 큰 기공 크기와 높은 기공율을 보일수록 유리한 반면에, 이 경우는 코팅층의 접착력이 저하하여 내마모성이 저하하게 되는 문제점이 있고,Generally, plasma spray coating of ceramic material basically forms pores of about 5-20% in the coating layer. The smaller the pores, the higher the adhesion can be obtained. Therefore, use a small particle size or adjust the spraying parameters. It is necessary to obtain as small pore size and low porosity as possible. However, in the case of paper rolls, the larger the pore size and the higher the porosity, the more advantageous it is to separate the paper well, while in this case, there is a problem in that the adhesion of the coating layer is lowered and the wear resistance is lowered.

또한, 세라믹 코팅층의 기공으로 인하여 기공을 따라 제지 공정시 사용되는용액이 침투하여 모재를 부식시키게 되므로 모재의 용액 침투를 방지하는 일종의 내부식 방지막을 형성시켜주어야 하는 문제점이 있다.In addition, because the pores of the ceramic coating layer penetrates the solution used in the papermaking process along the pores to corrode the base material, there is a problem that a kind of anti-corrosion film to prevent solution penetration of the base material to be formed.

본발명은 상기문제점을 해결하기 위하여 안출된 것으로 내마모성 및 내부식성이 우수할 뿐아니라 종이가 롤에서 잘 이탈되도록 된 제지용 롤을 제공하고자 하는데 그 목적이 있다.The present invention has been made in order to solve the above problems is to provide a paper roll that is not only excellent in wear resistance and corrosion resistance, but also paper is detached from the roll.

도 1. 발명예의 세라믹 코팅층 사진으로서 (a)는 코팅층의 단면사진이고 (b)는 표면의 사진이다.Figure 1 is a photograph of the ceramic coating layer of the invention example (a) is a cross-sectional photograph of the coating layer and (b) is a photograph of the surface.

도 2. 비교예의 세라믹 코팅층 사진으로서 (a)는 코팅층의 단면사진이고 (b)는 표면의 사진이다.Figure 2 is a photograph of the ceramic coating layer of the comparative example (a) is a cross-sectional photograph of the coating layer and (b) is a photograph of the surface.

도 3. 4주간 부식시험후 비교예 1과 발명예 1의 단면조직을 찍은 사진으로서 (a)는 비교예1의 사진이고 (b)는 발명예1의 사진이다.3. The cross-sectional structure of Comparative Example 1 and Inventive Example 1 after the corrosion test for 4 weeks, wherein (a) is a photograph of Comparative Example 1 and (b) is a photograph of Inventive Example 1.

도 4. 4주간 부식시험후 비교예 3과 발명예 3의 단면조직을 찍은 사진으로서 (a)는 비교예3의 사진이고 (b)는 발명예3의 사진이다.4. The cross-sectional structure of Comparative Example 3 and Inventive Example 3 after the corrosion test for 4 weeks, wherein (a) is a photograph of Comparative Example 3 and (b) is a photograph of Inventive Example 3.

본 발명은 저탄소강으로 된 롤 소재 표면에 Ni계 또는 Co계 합금을 기공도가 면적분율로 3%이하가 되도록 코팅하고, 상기 코팅층 위로 Al2O3또는 Cr2O4에 2-40중량%의 TiO2를 함유한 세라믹을 기공도가 면적분율로 표면은 11%이상이고 단면은 9%이하가 되도록 프라즈마 용사기법으로 코팅하여서 된 제지용 롤을 그 특징으로 한다.The present invention is coated with a Ni- or Co-based alloy on the surface of the roll material made of low carbon steel so that the porosity is 3% or less by area fraction, 2-40% by weight in Al 2 O 3 or Cr 2 O 4 over the coating layer It is characterized by a paper-making roll coated with a plasma spraying method such that the ceramic containing TiO 2 has a porosity of 11% or more in surface area and 9% or less in cross section.

본 발명에서 저탄소강 롤 소재 표면에 Ni계 또는 Co계 합금을 세라믹 코팅전에 코팅처리하는 것은 Ni계나 Co계 합금이 내부식성이 우수한 소재이기 때문에 이를 코팅하므로서 부식용액이 모재에 침투되지 않게 하기 위함이며, 그 기공도를 면적분율로 3%이하로 한정한 것은 부식용액이 모재에 침투되지 않도록 하기 위한 것으로서 기공도가 3%이상이면 세라믹코팅층을 통과한 용액이 금속용사층도 용이하게 통과하여 모재를 부식시키기 때문이다.In the present invention, coating the Ni- or Co-based alloy on the surface of the low carbon steel roll material before the ceramic coating is because the Ni- or Co-based alloy is a material having excellent corrosion resistance so that the corrosion solution does not penetrate into the base material. The porosity is limited to less than 3% by area fraction to prevent corrosion solution from penetrating into the base material. If the porosity is more than 3%, the solution passed through the ceramic coating layer easily passes through the metal spray layer. This is because it corrodes.

또한 본발명에서는 상기 Ni계 또는 Co계 합금코팅층 위에 Al2O3또는 Cr2O4에2-40%의 TiO2를 함유한 세라믹을 코팅하는데 그 이유는 내마모성증대와 인성증대를 위한 것이다.In addition, in the present invention, a ceramic containing 2-40% of TiO 2 in Al 2 O 3 or Cr 2 O 4 is coated on the Ni- or Co-based alloy coating layer for the purpose of increasing wear resistance and toughness.

여기에서 TiO2를 2%이하로 첨가하면 세라믹 코팅층이 너무 취약하여 깨지기용이하며, 40중량%이상 첨가하면 세라믹 코팅층의 경도가 너무 하락하여 내마모성이 저하되기 때문에 TiO2의 첨가량을 2-40%로 한정한다.If the TiO 2 is added below 2%, the ceramic coating layer is too fragile and easily broken. If the TiO 2 is added more than 40% by weight, the hardness of the ceramic coating layer is too low and the wear resistance is reduced. It is limited.

그리고 제지용 롤의 표면은 종이가 잘 이탈되도록 기공이 많아야 하기 때문에 세라믹 코팅층의 표면의 기공률은 11%이상이 되어야하고, 세라믹 코팅층이 좋은 내마모성을 갖기 위하여는 우수한 접착력을 유지하여야 하기 때문에 세라믹 코팅층의 단면의 기공을 적게하여 접착력증대에 의한 내마모성향상을 추구하는 것이 필요하다. 다라서 세라믹 코팅층의 단면의 기공률은 면적분율로 9%이하가 되는 것이 필요하다.Since the surface of the paper roll must have a lot of pores so that the paper is well separated, the porosity of the surface of the ceramic coating layer should be 11% or more, and the ceramic coating layer must have excellent adhesion to maintain good abrasion resistance. It is necessary to pursue the improvement of wear resistance by increasing the adhesion by reducing the pores of the cross section. Therefore, the porosity of the cross section of the ceramic coating layer needs to be 9% or less in area fraction.

이하에 실시예에 의거 본발명을 더욱 상세히 설명한다.Hereinafter, the present invention will be described in more detail based on examples.

[실시예 1]Example 1

두께 5mm의 저탄소강 기판에 Al2O3-3%TiO2세라믹 소재를 플라스마 용사코팅 기법을 이용하여 두께 400㎛의 코팅층을 제작하고 여러종류의 시편을 제작한 다음, 코팅층의 표면과 단면 기공도를 20여군데 이상 평균을 구하고, 코팅층의 접착력도 5번 이상 측정하여 평균을 구한 결과가 다음 표1에 나타나 있다.After the Al 2 O 3 -3% TiO 2 ceramic material was fabricated on the 5mm thick carbon substrate by using the plasma spray coating method, a coating layer having a thickness of 400 μm was fabricated, and various kinds of specimens were fabricated. The average of more than 20 places, and the average of the adhesive strength of the coating layer measured by five or more times are shown in Table 1 below.

[표1]Table 1

상기 표1과 같은 조건으로 시편을 제작하여 표면과 단면을 관찰하였다. 도 1에서는 발명예의 표면과 단면 사진을 보이고 있으며, 도 2에서는 비교예의 표면과 단면 사진을 보이고 있다. 도 1과 2에서 보이는 바와 같이 발명예의 세라믹 코팅층은 표면의 기공도는 높고, 단면의 기공도는 낮아서 접착력도 높으면서 종이는 잘 이탈되게 된다. 반면에 비교예의 경우는 표면과 단면의 기공도가 거의 동일하여 접착력은 우수한 반면 특히 표면의 기공도가 작아서 종이 이탈에 문제점을 보이게 된다.The specimens were prepared under the same conditions as in Table 1, and the surface and the cross section were observed. 1 shows a surface and a cross-sectional photograph of the invention example, and FIG. 2 shows a surface and a cross-sectional photograph of the comparative example. As shown in FIGS. 1 and 2, the ceramic coating layer of the invention has a high porosity on the surface, a low porosity on the cross section, and high paper adhesion, thereby leaving the paper well. On the other hand, in the case of the comparative example, the porosity of the surface and the cross-section is almost the same, the adhesive force is excellent, but the porosity of the surface is small, and thus there is a problem in paper separation.

[실시예 2]Example 2

두께 5mm의 저탄소강 기판에 내부식성이 우수한 금속 합금을 약 150㎛용사코팅하고, 그위로 세라믹 코팅층을 약 300㎛용사코팅을 실시하여 여러종류의 시편을 제작한 다음, 각 시편의 기공도를 측정한 결과가 다음 표2에 나타나 있다.A 150 mm thick metal alloy with excellent corrosion resistance was sprayed on a low carbon steel substrate having a thickness of 5 mm, and then a spray coating of about 300 μm was applied on the ceramic coating layer to prepare various kinds of specimens, and then the porosity of each specimen was measured. The results are shown in Table 2 below.

[표2][Table 2]

용사코팅 시편 조건.Thermal spray coating specimen conditions. 금속 본드코팅층Metal Bond Coating Layer 세라믹 코팅층Ceramic coating layer 합금층기공도(%)Alloy Layer Porosity (%) 세라믹층 기공도(%)Ceramic Layer Porosity (%) 표면surface 단면section 비교예 1Comparative Example 1 NiCrAlCoYNiCrAlCoY Al2O3-3%TiO2 Al 2 O 3 -3% TiO 2 66 99 77 비교예 2Comparative Example 2 NiCrAlCoYNiCrAlCoY Al2O3-13%TiO2 Al 2 O 3 -13% TiO 2 66 99 77 비교예 3Comparative Example 3 NiCrFeSiBCNiCrFeSiBC Al2O3-3%TiO2 Al 2 O 3 -3% TiO 2 66 99 77 발명예 1Inventive Example 1 NiCrAlCoYNiCrAlCoY Al2O3-3%TiO2 Al 2 O 3 -3% TiO 2 22 1717 99 발명예 2Inventive Example 2 NiCrAlCoYNiCrAlCoY Al2O3-13%TiO2 Al 2 O 3 -13% TiO 2 22 1212 77 발명예 3Inventive Example 3 NiCrFeSiBCNiCrFeSiBC Al2O3-13%TiO2 Al 2 O 3 -13% TiO 2 22 1515 77

상기 표2와 같은 조건으로 시편을 제작하여 제지공장에서 실제 사용되는 용액에서 4주간 침지 부식시험 후 단면을 관찰하였다.The specimens were prepared under the conditions shown in Table 2, and the cross-sections were observed after the immersion corrosion test for 4 weeks in the solution actually used in the paper mill.

도 3에서는 비교예 1과 발명예 1의 단면 조직을 보이고 있다. 발명예 1의 모재 부식도가 비교예 1의 모재 부식도에 비하여 현저히 감소함을 확인할 수 있다. 도 4에서는 비교예 3과 발명예 3의 단면조직을 보이고 있다. 비교예 3의 금속본드층의 기공도가 발명예 3의 금속 본드코팅층의 기공도에 비하여 높음을 확인할 수 있으며, 이러한 기공을 따라서 용액이 침투하므로 모재의 부식이 심화됨을 확인할 수 있다.3 shows the cross-sectional structure of Comparative Example 1 and Inventive Example 1. FIG. It can be seen that the base material corrosion degree of Inventive Example 1 is significantly reduced compared to the base material corrosion degree of Comparative Example 1. 4 shows cross-sectional structures of Comparative Example 3 and Inventive Example 3. FIG. It can be confirmed that the porosity of the metal bond layer of Comparative Example 3 is higher than the porosity of the metal bond coating layer of Inventive Example 3, and since the solution penetrates along these pores, the corrosion of the base material is intensified.

이와 같이 제조된 롤은 종이가 롤에서 잘 이탈되며, 세라믹 용사층의 우수한 접착력으로 내마모성이 향상되며, 모재의 부식 방지로 코팅층의 수명이 연장되는 효과가 있다.The rolls thus prepared are easily separated from the roll of paper, and the wear resistance is improved by the excellent adhesion of the ceramic thermal sprayed layer, and the life of the coating layer is extended by the corrosion prevention of the base material.

Claims (4)

저탄소강으로 된 롤 소재위에 Ni계 또는 Co계 합금으로된 코팅층과, Al2O3또는 Cr2O4에 2-40중량%의 TiO2를 함유한 세라믹으로된 코팅층이 차례로 코팅되어 있는 것을 특징으로 하는 제지용 롤.A coating layer made of Ni- or Co-based alloy on a roll of low carbon steel and a coating layer made of ceramic containing 2-40% by weight of TiO 2 in Al 2 O 3 or Cr 2 O 4 are coated in this order. Paper roll to make. 제1항에 있어서,The method of claim 1, 저탄소강으로 된 롤 소재위에 Al2O3또는 Cr2O4에 2-40중량%의 TiO2를 함유한 세라믹 코팅층으로된 것을 특징으로 하는 제지용 롤.A paper roll comprising a ceramic coating layer containing 2-40% by weight of TiO 2 in Al 2 O 3 or Cr 2 O 4 on a roll of low carbon steel. 제1항에 있어서,The method of claim 1, 상기 Ni계 또는 Co계 합금의 코팅층은 기공도가 면적 분율로 3%이하이고,The coating layer of the Ni-based or Co-based alloy has a porosity of 3% or less as an area fraction, 상기 Al2O3또는 Cr2O4계 세라믹 코팅층은 기공도가 면적분율로 표면은 11% 이상, 단면은 9%이하인 것을 특징으로 하는 제지용 롤.The Al 2 O 3 or Cr 2 O 4 based ceramic coating layer has a porosity of 11% or more in surface area and 9% or less in cross section as an area fraction. 제1항, 제2항 또는 제3항에 있어서The method according to claim 1, 2 or 3 상기 Ni계나 Co계 합금층은 고속용사 또는 플라스마 용사기법 및 Al2O3또는 Cr2O4계 세라믹층은 플라즈마 용사기법에 의해 코팅된 것을 특징으로 하는 제지용롤.The Ni-based or Co-based alloy layer is a high-speed spraying or plasma spraying technique and Al 2 O 3 or Cr 2 O 4 based ceramic layer is coated by a plasma spraying method.
KR1019990061346A 1999-12-23 1999-12-23 Paper roll having ceramic coated layer KR20010057927A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100722249B1 (en) * 2005-08-20 2007-05-29 학교법인 포항공과대학교 Al2O3-TiO2 SYSTEM COATING LAYER HAVING EXCELLENT WEARABILITY MANUFACTURED BY PLASMA SPRAYING
KR20200102067A (en) 2019-02-21 2020-08-31 신효종 Work roll for tension leveler of metal foil rolling mill and manufacturing method therof

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JPH04146290A (en) * 1990-10-08 1992-05-20 Yamauchi Corp Press roll for paper making machine
US5272821A (en) * 1989-10-15 1993-12-28 Institute Of Paper Science And Technology, Inc. Method and apparatus for drying web
JPH08199492A (en) * 1995-01-20 1996-08-06 Ishikawajima Harima Heavy Ind Co Ltd Press roll
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KR19980081252A (en) * 1997-04-11 1998-11-25 주우코일리-카우필라 Press rolls, ceramic press compositions, and ceramic coating compositions with ceramic coatings for adverse corrosive environments.
KR19980081300A (en) * 1997-04-11 1998-11-25 주우코일리-카우필라 A roll for a paper machine or a paperboard machine, a process for producing the roll, and a coating composition for the roll
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JPH11335993A (en) * 1998-05-28 1999-12-07 Ishikawajima Harima Heavy Ind Co Ltd Press roll and its production

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US5272821A (en) * 1989-10-15 1993-12-28 Institute Of Paper Science And Technology, Inc. Method and apparatus for drying web
WO1991013204A1 (en) * 1990-02-22 1991-09-05 Tampella Papertech Oy Press roll for paper machine
JPH04146290A (en) * 1990-10-08 1992-05-20 Yamauchi Corp Press roll for paper making machine
JPH08199492A (en) * 1995-01-20 1996-08-06 Ishikawajima Harima Heavy Ind Co Ltd Press roll
KR19990008364A (en) * 1995-06-08 1999-01-25 레이몬드더블유.캠벨 Alloy coated wet hot press roll
JPH10219581A (en) * 1997-01-30 1998-08-18 Ishikawajima Harima Heavy Ind Co Ltd Press roll
KR19980081252A (en) * 1997-04-11 1998-11-25 주우코일리-카우필라 Press rolls, ceramic press compositions, and ceramic coating compositions with ceramic coatings for adverse corrosive environments.
KR19980081300A (en) * 1997-04-11 1998-11-25 주우코일리-카우필라 A roll for a paper machine or a paperboard machine, a process for producing the roll, and a coating composition for the roll
JPH11335993A (en) * 1998-05-28 1999-12-07 Ishikawajima Harima Heavy Ind Co Ltd Press roll and its production

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100722249B1 (en) * 2005-08-20 2007-05-29 학교법인 포항공과대학교 Al2O3-TiO2 SYSTEM COATING LAYER HAVING EXCELLENT WEARABILITY MANUFACTURED BY PLASMA SPRAYING
KR20200102067A (en) 2019-02-21 2020-08-31 신효종 Work roll for tension leveler of metal foil rolling mill and manufacturing method therof

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